/*
    * This file is part of Waarp Project (named also Waarp or GG).
    *
    *  Copyright (c) 2019, Waarp SAS, and individual contributors by the @author
    *  tags. See the COPYRIGHT.txt in the distribution for a full listing of
    * individual contributors.
    *
    *  All Waarp Project is free software: you can redistribute it and/or
    * modify it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or (at your
   * option) any later version.
   *
   * Waarp is distributed in the hope that it will be useful, but WITHOUT ANY
   * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
   * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License along with
   * Waarp . If not, see <http://www.gnu.org/licenses/>.
   */
  package org.waarp.ftp.core.command.service;
  
  import org.waarp.common.command.ReplyCode;
  import org.waarp.common.command.exception.CommandAbstractException;
  import org.waarp.common.command.exception.Reply501Exception;
  import org.waarp.common.command.exception.Reply553Exception;
  import org.waarp.ftp.core.command.AbstractCommand;
  import org.waarp.ftp.core.exception.FtpNoFileException;
  import org.waarp.ftp.core.exception.FtpNoTransferException;
  import org.waarp.ftp.core.file.FtpFile;
  
  /**
   * RNTO command
   */
  public class RNTO extends AbstractCommand {
    @Override
    public final void exec() throws CommandAbstractException {
      if (!hasArg()) {
        invalidCurrentCommand();
        throw new Reply501Exception("Need a pathname as argument");
      }
      final String filename = getArg();
      FtpFile file = null;
      try {
        file = getSession().getDataConn().getFtpTransferControl()
                           .getExecutingFtpTransfer().getFtpFile();
      } catch (final FtpNoFileException ignored) {
        // nothing
      } catch (final FtpNoTransferException ignored) {
        // nothing
      }
      if (file != null) {
        final String previousName = file.getFile();
        if (file.renameTo(filename)) {
          getSession().setReplyCode(
              ReplyCode.REPLY_250_REQUESTED_FILE_ACTION_OKAY,
              '"' + filename + "\" as new file name for \"" + previousName + '"');
          return;
        }
      }
      // FtpFile name not allowed or not found
      throw new Reply553Exception("Filename not allowed");
    }
  
  }